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通过对福建省明溪县夏阳乡杉木良种幼林进行５个家系、５种密度、３种肥料的试验，结果表明：不同家系、密度、肥料间的效应不同。各家系间杉木幼林的生长差异显著（Ｆ＝４．３０），施肥对不同家系的增长效果不尽相同，其中以Ａ、Ｄ家系生长效果最好；不同密度对各家系幼林的施肥效果影响也不相同，以中等密度的杉木幼林施肥效果最好；磷肥对杉木幼林的增长效果较为明显，氮肥效果则不明显。
Five families, five densities and three kinds of fertilizers were tested on young Chinese fir seedlings in Xiayang Township, Mingxi County, Fujian Province. The results showed that the effects of different families, densities and fertilizers were different. The growth of young Chinese fir in each family was significantly different (F = 4.30). The effects of fertilization on the growth of different families were different, among which the growth was best in families A and D. The effects of different densities on the fertilization of young families The effect is not the same, and the middle-density Chinese fir plantation has the best fertilization effect. The effect of P fertilizer on the growth of young Chinese fir is obvious, while the effect of nitrogen fertilizer is not obvious.